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Finding the Fourth Proportional to 86,438.63, 119,285.33 and 46,694.63

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Solution

The fourth proportional to 86,438.63, 119,285.33 and 46,694.63 is: 64,438.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,438.63 : 119,285.33 = 46,694.63 : x
  2. Step 2: Convert to fraction form
    86,438.63/119,285.33 = 46,694.63/x
  3. Step 3: Cross multiply
    86,438.63x = 119,285.33 × 46,694.63
  4. Step 4: Simplify right side
    86,438.63x = 5,569,983,518.88
  5. Step 5: Solve for x
    x = 5,569,983,518.88/86,438.63
  6. Step 6: Final answer
    x = 64,438.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.